Abstract:
OBJECTIVES:Because of its good matching performance the VITA 3D-Master shade guide (3D) is frequently used for determination of tooth color. Numerous composites/ceramics are, however, available in VITA Classical (VC) shades only. The objective of this study was to investigate the possibility of performing a shade match with 3D Master and converting this result via a table in a VC shade (indirect method) without this resulting in an apparent inferior shade matching in comparison with direct shade matching with the VC. METHODS:Experiments were performed with an artificial, computer-generated tooth color space. Conversion tables were generated by calculating the color difference (ΔE) between a 3D shade and the closest VC shade (simple conversion table) and with the aid of optimization procedures. Statistical differences between the direct and indirect methods and between the indirect methods were assessed by use of a U-test. RESULTS:Median ΔE was 2.38 for direct matching with the VC and 2.86 for indirect matching by use of a simple conversion table (p < 0.01). Optimized tables performed slightly better (median ΔE = 2.81). CONCLUSIONS:Within the limitations of the study, it is usually possible to determine tooth color with the 3D and convert it, via a table, into a VC shade without adding a clinically apparent error to the direct shade match with the VC.
journal_name
Acta Odontol Scandjournal_title
Acta odontologica Scandinavicaauthors
Hassel AJ,Zenthöfer A,Corcodel N,Hildenbrandt A,Reinelt G,Wiesberg Sdoi
10.3109/00016357.2012.715197subject
Has Abstractpub_date
2013-05-01 00:00:00pages
721-6issue
3-4eissn
0001-6357issn
1502-3850journal_volume
71pub_type
杂志文章abstract:OBJECTIVE:A major aspect in evaluating the quality of dental materials is their physical properties. Their properties should be a best fit of the ones of dental hard tissues. Manufacturers give data sheets for each material. The properties listed are characterized by a specific value. This assumes (but does not prove) ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2013.878391
更新日期:2014-11-01 00:00:00
abstract:OBJECTIVE:To evaluate the smear layer removal and wettability of AH Plus sealer on root canal dentin treated with MA (maleic acid), MA + CTR (cetrimide) and MA + CTR + CHX (chlorhexidine) as final irrigating regimens. MATERIAL AND METHODS:For smear layer removal, 40 teeth were instrumented to size F4 and divided into ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016357.2017.1402208
更新日期:2018-04-01 00:00:00
abstract:OBJECTIVE:To investigate the incidence and prevalence of developmental odontogenic cysts in children and adolescents and compare the features of the two most common types, dentigerous cyst and keratocystic odontogenic tumor (KCOT). STUDY DESIGN:A retrospective review in a series of 369 patients with all histological d...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2014.913192
更新日期:2014-11-01 00:00:00
abstract::A method to analyse cephalometric radiographs with the help of a computer has been described. With the system a cephalometric radiograph can be analysed and the results compared to corresponding analyses of individuals with ideal occlusion. The results can also be visualized as schematic figures of the patients. The c...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357809029087
更新日期:1978-01-01 00:00:00
abstract::The aim of this study was to explore the association between negative experiences during children's first dental visit and any subsequent dental anxiety and related factors in three dental clinics in the Veneto Region of Italy. For this purpose, parents of 378 children filled out a questionnaire. Factors related to ch...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350260248274
更新日期:2002-10-01 00:00:00
abstract::Overall dental maturity was studied semilongitudinally in a group of 248 healthy children born in Helsinki in 1968-73. In all, 738 orthopantomograms were taken of these children at ages of 2.5-16.5 years. Overall dental maturity was estimated by the method of Demirjian and Goldstein, which is based on the development ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016358608997720
更新日期:1986-08-01 00:00:00
abstract::A review of the literature on dental treatment was conducted and models presented of the doctor/dentist-patient relationship. These models are listed and divided into two subgroups, empirical and normative models. The models are scrutinized with focus on the dentist-patient communicative relationship exclusively. Diff...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章,评审
doi:10.3109/00016359709115403
更新日期:1997-04-01 00:00:00
abstract::Using antibodies to mouse submandibular epidermal growth factor (EFG) and nerve growth factor (NGF), immunohistochemical studies were performed on sections of flash-frozen human whole saliva in both light and transmission electron microscopy. Light microscopy showed the presence of overall network-like immunoreactions...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016358909007714
更新日期:1989-10-01 00:00:00
abstract::In a previous study, dentists reported very high scores for perceived physical workload, but only low to moderate scores for the musculoskeletal system. This is difficult to explain when other occupational groups in the dental services are compared, and is the main reason why the present study was performed. To measur...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350510019964
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVE:Acidic fluorides are proposed for the treatment of dental erosion. The aim of this study was to examine the irritation properties of dilute hydrofluoric acid (HF) solutions for potential use in the oral cavity. MATERIAL AND METHODS:Hen's egg test-chorioallantoic membrane (HET-CAM): The CAM was accessed by ca...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350903117118
更新日期:2009-01-01 00:00:00
abstract::Changes in the distribution of caries in economically developed nations over the last 15-20 years include 1) an overall decline in prevalence and severity in child populations; 2) an increasingly skewed distribution, with most disease now found in a small number of children; and 3) concentration of caries in pit and f...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/000163598422956
更新日期:1998-06-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to examine the effects of a dentifrice containing 5% calcium sodium phosphosilicate (CSP) on the remineralization of the enamel using optical coherence tomography (OCT). MATERIALS AND METHODS:Bovine incisors were sliced and shaped in a rectangular form. One group of five specime...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016357.2016.1277588
更新日期:2017-04-01 00:00:00
abstract:OBJECTIVE:Guided by the conceptual framework of Gilbert and co-workers, this study assesses satisfaction with oral health as reported by 65-year-olds in Sweden and Norway, the relationship of socio-demographic factors, clinical and subjective oral health indicators with satisfaction of oral health, and the consistency ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350902908780
更新日期:2009-01-01 00:00:00
abstract:OBJECTIVE:To determine the use of toothpaste, the reasons behind its irregular use, the cost perceptions, and the fluoride concentrations in locally manufactured toothpaste. MATERIAL AND METHODS:A total of 978 dental patients attending 13 dental clinics for 2 weeks in June 2007 completed a pre-tested questionnaire on ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350802297748
更新日期:2008-10-01 00:00:00
abstract:OBJECTIVE:To investigate the expression of Wnt3a, Wnt10b, β-catenin and DKK1 in the periodontal ligament (PDL) during orthodontic tooth movement (OTM) in rats. MATERIALS AND METHODS:Nickel-titanium closed-coil springs were used to deliver an initial 50 g mesial force to the left maxillary first molars in 30 rats. The ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2015.1090011
更新日期:2016-01-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to examine the relationship between turbidity of mouth rinsed water and oral health status such as dental and periodontal conditions, oral hygiene status, flow rate of saliva and oral bacteria. MATERIALS AND METHODS:Subjects were 165 patients who visited the Dental Hospital, To...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2011.654258
更新日期:2013-01-01 00:00:00
abstract:OBJECTIVE:Gingival fibroblasts (GFs) produce pro-inflammatory cytokines in response to stimulation with lipopolysaccharide (LPS) of Porphyromonas gingivalis, which is thought to be mediated by activation of toll-like receptors (TLR)2 and TLR4. The present study investigated the expression of interleukin (IL)-6, TLR2, a...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2013.834535
更新日期:2014-07-01 00:00:00
abstract::The purpose of this study was to determine the sensitivity, specificity, positive and negative predictive values for Corah's Dental Anxiety Scale (DAS) and two modified versions of it (MDAS; MDAS/4). A questionnaire was mailed to a simple random sample of 1,190 25-year-old residents in the west of Norway in 1997. Half...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/00016350050217091
更新日期:2000-12-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to evaluate the effects of various irrigating solutions and photoactivated disinfection (PAD) on the push-out bond strengths of fiber posts to root dentin. MATERIALS AND METHODS:Thirty-two human teeth were divided into eight groups, as follows: (1) irrigation with physiologic saline...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2014.906651
更新日期:2014-11-01 00:00:00
abstract::The influence of the nature of the root surface on the demineralization and remineralization processes within artificial fluoride-treated caries lesions was investigated using microscopic and X-ray microanalytical methods. Traces of fluoride were detected in the outer parts (about 25 micrometers) of the lesions after ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/000163502760148025
更新日期:2002-08-01 00:00:00
abstract::In Finland, adults born in 1961 or later were progressively entitled to subsidies for dental care from private practitioners during 1986-90, while at the same time having access to care in the Public Dental Service. The aim of this study was to compare the effects of attendance frequency of private dental care on trea...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/000163502753509473
更新日期:2002-03-01 00:00:00
abstract::Fifty-eight experimental resin restorations were performed in intact, human premolars, using different leakage-reducing restorative procedures. These were conventional acid-etching and acid-etching followed by cavity treatment with an intermediary layer of low-viscous resin or the dentin adhesive NPG-GMA/ethanol. The ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016358909007710
更新日期:1989-10-01 00:00:00
abstract:INTRODUCTION:Certain oral manifestations signal progression of HIV disease among HAART naïve patients or an increase in the plasma HIV-1 RNA levels for those on treatment. Ranulas may be one of those manifestations. Therefore, this study describes the clinical features of patients who presented with ranulas including t...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2011.600709
更新日期:2012-03-01 00:00:00
abstract::Fluorescent microspheres (FM) were used to visualize and semi-quantify blood flow in the temporomandibular joint (TMJ) during experimental unilateral traumatic occlusion of the maxillary and mandibular molar teeth in 30 young rats. At different postoperative observation periods varying from 1 to 30 days FM were inject...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016359309040580
更新日期:1993-10-01 00:00:00
abstract::Candida fungi are frequent in the oral cavity, especially in denture wearers. The infection can cause serious complications in elderly or debilitated subject. The present experimental group consisted of 81 female psychiatric patients (35--91 years of age). In addition to a clinical examination, smears from the palate,...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357909004708
更新日期:1979-01-01 00:00:00
abstract::The present study describes a Swedish family in which the mother and her son were affected with signs of popliteal pterygium syndrome (PPS, OMIM 119500). Both individuals had bilateral complete cleft lip and palate, oral synechiae, paramedian pits on the lower lip, toe syndactyly and a piece of triangular skin overgro...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.1080/000163500429334
更新日期:2000-04-01 00:00:00
abstract::In Drosophila the Toll family, a group of transmembrane proteins, plays crucial roles in the host defense against invading pathogens. Mammalian species also conserve this system as the Toll-like receptor (TLR) family, which includes more than 10 members that have been identified so far. Both the Toll and TLR families ...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章,评审
doi:10.1080/000163501750266701
更新日期:2001-06-01 00:00:00
abstract::The effect of extrinsic asthma on periodontal conditions was studied in a group of 30 asthmatic children. Clinical examination revealed that asthmatic children had more gingivitis than their healthy controls. The asthmatic children who received an inhaled corticosteroid as treatment had more severe gingivitis compared...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357909004680
更新日期:1979-01-01 00:00:00
abstract::Twenty-four Long Evans/Turku rats were used to study the effect of prenatally increased oxygen tension on the mandibular condylar cartilage. Pregnant rats were exposed to increased oxygen tension in an air chamber for 14 days. The animals were returned to normal laboratory conditions after parturition. Three control a...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016358609004737
更新日期:1986-10-01 00:00:00
abstract:OBJECTIVE:To evaluate the relative abrasivity of different toothpastes and polishing pastes both qualitatively and quantitatively. MATERIALS AND METHODS:Acrylic plates were exposed to brushing in a brushing machine with a toothpaste/water slurry for 1 and 6 h. Twelve different toothpastes were used and also four diffe...
journal_title:Acta odontologica Scandinavica
pub_type: 杂志文章
doi:10.3109/00016357.2012.696693
更新日期:2013-05-01 00:00:00